As a result of a graphics error (incorrect voting numbers were displayed on screen) during the performance recap at the end of Wednesday night's East Coast broadcast of THE X FACTOR, the Top 13 acts performed their "Save Me" songs for America's re-vote, in a live, one-hour performance show which aired last night.

Following the performance, Simon Cowell asked facetiously, "Rachel, do you have a twin?." He went on to explain, "You must have because the girl who sang here last night was horrible and then the girl who sang tonight was fantastic."

Rachel Potter starred in the first Broadway revival of Andrew Llyod Webber's Evita in 2012 in the role of Juan Peron's mistress. She wowed audiences with her stirring rendition of the ballad "Another Suitcase in Another Hall." The actress made her Broadway debut as Wednesday Addams in The Addams Family, with music by Andrew Lippa.

Her other theater credits include Glinda in the national tour of Wicked. She was also a contestant on the MTV reality series 'Legally Blonde: The Search for Elle Woods.'